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3 July 2023
17 December 2019
22 May 2019
12 October 2018
Also expand the 3-shanten wait list based on the same computer program. For example, you can pick up a 2 pin, 3 pin and 6 pin while discarding the 2 sou and the isolated wind tiles. This will leave you in tenpai on a closed wait for 5 sou.
+10
Expand the list of possible tiles to 1-shanten for the 2-shanten example. Based on a brute force search by a computer program. The basic idea is that one can discard the two useless wind tiles while building sou groups, also leading to 1-shanten hands.
+4